By this time the crowd, unwieldy and stepping on each other’s toes, numbered into the thousands. But Jesus’ primary concern was his disciples. He said to them, “Watch yourselves carefully so you don’t get contaminated with Pharisee yeast, Pharisee phoniness. You can’t keep your true self hidden forever; before long you’ll be exposed. You can’t hide behind a religious mask forever; sooner or later the mask will slip and your true face will be known. You can’t whisper one thing in private and preach the opposite in public; the day’s coming when those whispers will be repeated all over town.
Luke 12:3 MSG
A firm belief of the doctrine of God’s universal providence, and the extent of it, would satisfy us when in peril, and encourage us to trust God in the way of duty. Providence takes notice of the meanest creatures, even of the sparrows, and therefore of the smallest interests of the disciples of Christ. Those who confess Christ now, shall be owned by him in the great day, before the angels of God. To deter us from denying Christ, and deserting his truths and ways, we are here assured that those who deny Christ, though they may thus save life itself, and though they may gain a kingdom by it, will be great losers at last; for Christ will not know them, will not own them, nor show them favour. But let no trembling, penitent backslider doubt of obtaining forgiveness. This is far different from the determined enmity that is blasphemy against the Holy Ghost, which shall never be forgiven, because it will never be repented of. Matthew Henry