Matthew 10:

Therefore whoever confesses Me before men, him I will also confess before My Father who is in heaven.33But whoever denies Me before men, him I will also deny before My Father who is in heaven.37He who loves father or mother more than Me is not worthy of Me. And he who loves son or daughter more than Me is not worthy of Me.38And he who does not take his cross and follow after Me is not worthy of Me.27Then Peter answered and said to Him, “See, we have left all and followed You. Therefore what shall we have?”28So Jesus said to them, “Assuredly I say to you, that in the regeneration, when the Son of Man sits on the throne of His glory, you who have followed Me will also sit on twelve thrones, judging the twelve tribes of Israel.29And everyone who has left houses or brothers or sisters or father or mother or wife or children or lands, for My name’s sake, shall receive a hundredfold, and inherit eternal life.30But many who are first will be last, and the last first.

St. John Chrysostom:

“He not only requires faith which is of the mind, but confession which is by the mouth, that He may exalt us higher, and raise us to a more open utterance, and a larger measure of love. For this is spoken not to the Apostles only, but to all; He gives strength not to them only, but to their disciples. And he that observes this precept will not only teach with free utterance, but will easily convince all; for the observance of this command drew many to the Apostles.”