Galatians 3:15

VERSE 15. Brethren, I speak after the manner of men; Though it be but a man's covenant, yet if it be confirmed, no man disannulleth, or addeth thereto.

After the preceding, well-taken argument, Paul offers another based on the similarity between a man's testament and God's testament. A man's testament seems too weak a premise for the Apostle to argue from in confirmation of so important a matter as justification. We ought to prove earthly things by heavenly things, and not heavenly things by earthly things. But where the earthly thing is an ordinance of God we may use it to prove divine matters. In Matthew 7:11 Christ Himself argued from earthly to heavenly things when He said: "If ye then, being evil, know how to give good gifts to your children; how much more shall your Father which is in heaven give good things to them that ask him?"