Yes, he is a false teacher

It is unbelievable how many "christians" whore after false teachers and false "gods" just like Ancient Israel did.  The only difference between now and then is we have what they did written in the bible as a warning to not do as they did.

Just because someone is likeable and had taught truth previously does not mean they have not become a false teacher.  Both Messiah Yeshua and the apostle Paul warned about the wolves / tares / false teachers that came up AMONG the believers.

Matthew 7:15  Beware of false prophets, which come to you in sheep's clothing, but inwardly they are ravening wolves.

Acts 20
28  Take heed therefore unto yourselves, and to all the flock, over the which the Holy Ghost hath made you overseers, to feed the church of God, which he hath purchased with his own blood.
29  For I know this, that after my departing shall grievous wolves enter in among you, not sparing the flock.
30  Also of your own selves shall men arise, speaking perverse things, to draw away disciples after them.
31  Therefore watch, and remember, that by the space of three years I ceased not to warn every one night and day with tears.

Matthew 13
26  But when the blade was sprung up, and brought forth fruit, then appeared the tares also.
Mat 13:27  So the servants of the householder came and said unto him, Sir, didst not thou sow good seed in thy field? from whence then hath it tares?
28  He said unto them, An enemy hath done this. The servants said unto him, Wilt thou then that we go and gather them up?
29  But he said, Nay; lest while ye gather up the tares, ye root up also the wheat with them.
30  Let both grow together until the harvest: and in the time of harvest I will say to the reapers, Gather ye together first the tares, and bind them in bundles to burn them: but gather the wheat into my barn.

There are many, many people who started off teaching the truth but then gradually started teaching in heresies and false doctrines.  Just because you have become friends with someone or listened to their teachings that were 100% biblical does not mean that you should let your guard down and believe everything they teach.  You need to compare EVERYTHING taught with scripture.  While there are some teachings that are not clear and can be discussed and debated on meaning, other scripture is clear on what it says and is not open for debate.

When you listen to a teacher and they tell you stuff you like listening to - such as end times and what is going on in the world and how it relates to bible prophecy - and that teacher says it is acceptable to use pagan practices to worship Yahweh, as much as you like what that person says about bible prophecy, that person is a false teacher.  If a person has a "new" teaching about Revelation 12 and identifies the manchild as "the church" and claims it can foretell the day of the rapture, that person - as much as you like them - is a false teacher (that teaching is old and is part of the dominionist kingdom theology known as 'manifest sons of god')   Yahweh says these false teachers are a TEST to see if you will whore after the false teacher and their false "gods" or if you truly love Yahweh and will follow Him and Him alone.

Deuteronomy 13
1  If there arise among you a prophet, or a dreamer of dreams, and giveth thee a sign or a wonder,
2  And the sign or the wonder come to pass, whereof he spake unto thee, saying, Let us go after other gods, which thou hast not known, and let us serve them;
3  Thou shalt not hearken unto the words of that prophet, or that dreamer of dreams: for the LORD your God proveth you, to know whether ye love the LORD your God with all your heart and with all your soul.
4  Ye shall walk after the LORD your God, and fear him, and keep his commandments, and obey his voice, and ye shall serve him, and cleave unto him.

There are false teachers who are fleecing the flock and using he homeless to do so.  They pretend to be feeding the homeless while using the money donated for that cause for their personal bills,  This person is a judas and is a wolf no matter how many of his smooth sounding words sound so pretty in your ears.  There are other false teachers who teach kabballah and divination and many people whore after his smooth sounding lies.  No matter what these two taught in the past, they are now false teachers who refuse to repent of their wickedness and their followers are those who love smooth sounding lies.  Both the false teachers and their followers are deceived and passing the deception among themselves.

John 12
4  Then saith one of his disciples, Judas Iscariot, Simon's son, which should betray him,
5  Why was not this ointment sold for three hundred pence, and given to the poor?
6  This he said, not that he cared for the poor; but because he was a thief, and had the bag, and bare what was put therein.

Deuteronomy 18
10  There shall not be found among you any one that maketh his son or his daughter to pass through the fire, or that useth divination, or an observer of times, or an enchanter, or a witch,
11  Or a charmer, or a consulter with familiar spirits, or a wizard, or a necromancer.

False "christians" love listening to the lies of the false prophets.  They do not care about following Yahweh, and the only reason they accepted Yeshua as 'Savior' (not as their Lord) is because they want to "go home" (referring to heaven) but they want to do it THEIR way - a way without obedience and sacrifice to follow Messiah Yeshua the way He said to follow Him.  You must remember:  heaven was the fallen angels home too.

Isaiah 30
9  That this is a rebellious people, lying children, children that will not hear the law of the LORD:
10  Which say to the seers, See not; and to the prophets, Prophesy not unto us right things, speak unto us smooth things, prophesy deceits:

2 Timothy 4
3  For the time will come when they will not endure sound doctrine; but after their own lusts shall they heap to themselves teachers, having itching ears;
4  And they shall turn away their ears from the truth, and shall be turned unto fables.
5  But watch thou in all things, endure afflictions, do the work of an evangelist, make full proof of thy ministry.

Wolves run in packs.  When one wolf comes up with a deception that sounds good to their followers, that deception is taken by another wolf and used to deceive their followers so you get the false teachings spreading among the wolves.  These wolves will interview each other and defend the false heretical teachings.  The youtube false prophets are infamous for this - if something becomes popular, every wolf will teach it to try and get their share of the prey (IE:  $$$ from viewers - fleecing the sheep)

Ezekiel 22
25  There is a conspiracy of her prophets in the midst thereof, like a roaring lion ravening the prey; they have devoured souls; they have taken the treasure and precious things; they have made her many widows in the midst thereof.
26  Her priests have violated my law, and have profaned mine holy things: they have put no difference between the holy and profane, neither have they shewed difference between the unclean and the clean, and have hid their eyes from my sabbaths, and I am profaned among them.
27  Her princes in the midst thereof are like wolves ravening the prey, to shed blood, and to destroy souls, to get dishonest gain.
28  And her prophets have daubed them with untempered morter, seeing vanity, and divining lies unto them, saying, Thus saith the Lord GOD, when the LORD hath not spoken.

The road is NARROW and FEW find it.  If you are following a false teacher, then you need to repent and follow Messiah Yeshua.  The time is extremely short so you need to decide NOW who you will follow.

Matthew 7
13  Enter ye in at the strait gate: for wide is the gate, and broad is the way, that leadeth to destruction, and many there be which go in thereat:
14  Because strait is the gate, and narrow is the way, which leadeth unto life, and few there be that find it.

Matthew 7
21  Not every one that saith unto me, Lord, Lord, shall enter into the kingdom of heaven; but he that doeth the will of my Father which is in heaven.
22  Many will say to me in that day, Lord, Lord, have we not prophesied in thy name? and in thy name have cast out devils? and in thy name done many wonderful works?
23  And then will I profess unto them, I never knew you: depart from me, ye that work iniquity.^G458

Strong's number G458 iniquity (transliterated as anomia)   :
anomia
1) the condition of without law
     a) because ignorant of it
     b) because of violating it
2) contempt and violation of law, iniquity, wickedness

John14:15  If ye love me, keep my commandments.

John14:23  Jesus answered and said unto him, If a man love me, he will keep my words: and my Father will love him, and we will come unto him, and make our abode with him.

John15:10  If ye keep my commandments, ye shall abide in my love; even as I have kept my Father's commandments, and abide in his love.

1 John 2
3  And hereby we do know that we know him, if we keep his commandments.
4  He that saith, I know him, and keepeth not his commandments, is a liar, and the truth is not in him.

1 John 5
2  By this we know that we love the children of God, when we love God, and keep his commandments.
3  For this is the love of God, that we keep his commandments: and his commandments are not grievous.

Revelation 14:12  Here is the patience of the saints: here are they that keep the commandments of God, and the faith of Jesus.

Revelation 12:17  And the dragon was wroth with the woman, and went to make war with the remnant of her seed, which keep the commandments of God, and have the testimony of Jesus Christ.