'Lacking' in the Bible

"Peace I leave with you; my peace I give to you; I do not give it to you as the world does. Do not let your hearts be distressed or lacking in courage.

Now I rejoice in my sufferings for you, and I fill up in my physical body -- for the sake of his body, the church -- what is lacking in the sufferings of Christ.

We pray earnestly night and day to see you in person and make up what may be lacking in your faith.