In 1 Thessalonians 5:23 we read,
“And the very God of peace sanctify you wholly; and I pray God your whole spirit and soul and body be preserved blameless unto the coming of our Lord Jesus Christ.”
God wants us to be holy—every part of us.
Paul says that God will preserve our spirit and soul and body blameless until the coming of Christ. That means that He wants to make every part of us, both inward and outward, without sin. God wants to make our lives look like Jesus Christ.
Many will argue that since we are not Christ, then we cannot really become like Him who “was without sin.” And they are completely right, if we only take into account what we can do by our own will and strength.
But the key to becoming blameless is found in the next verse:
(24) Faithful is he that calleth you, who also will do it.”
There is no way that we can make ourselves holy, and that is okay, because God has not asked us to try. He says that HE is the one who will make us blameless. If he has called us to be holy and blameless, then only He can MAKE us holy and blameless in His sight.
Blamelessness is not the result of trying harder to be good; blamelessness is the result of submitting ourselves totally to what God wants to do in us. The question is ARE WE LETTING HIM DO HIS WORK IN US?