“Beware lest any man spoil you through philosophy and vain deceit, after the tradition of men, after the rudiments of the world, and not after Christ” (Colossians 2:8).

“Now the end of the commandment is charity out of a pure heart, and of a good conscience, and of faith unfeigned” (I Timothy 1:5).

“For Christ is not entered into the holy places made with hands, which are the figures of the true; but into heaven itself now to appear in the presence of God for us” (Hebrews 9:24).

“And Moses brought forth the people out of the camp to meet with God; and they stood at the nether part of the mount” (Exodus 19:17).

“Hold fast the form of sound words, which thou hast heard of me, in faith and love which is in Christ Jesus” (II Timothy 1:13).

When Paul wrote to his two young disciples, Timothy and Titus, he stressed again and again the vital importance of maintaining sound doctrine in their churches.