Gandhi was a pagan idolater who didn't have faith in Jesus or Christ's resurrection from the dead --yet, some Christians are quoting him. We must stay alert and not allow the enemy of God to sow bad seed:
Matthew 13:25 But while men slept, his enemy came and sowed tares among the wheat, and went his way.
But while men slept - When the professors were lukewarm, and the pastors indolent, his enemy came and sowed tares, ζιζανια degenerate, or bastard wheat. The righteous and the wicked are often mingled in the visible Church. Every Christian society, how pure soever its principles may be, has its bastard wheat - those who bear a resemblance to the good, but whose hearts are not right with God. He who sows this bastard wheat among God’s people is here styled God’s enemy; and he may be considered also as a sower of them who permits them to be sown and to spring up through his negligence. Wo to the indolent pastors, who permit the souls under their care to be corrupted by error and sin!" Adam Clarke
The Seven Deadly Deceptions Of Counterfeit Christianity