In the East objects are carried in the bosom which Europeans carry in the pocket. To have in one's bosom indicates kindness, secrecy, or intimacy ( Genesis 16:5 ; 2 Sam 12:8 ). Christ is said to have been in "the bosom of the Father," i.e., he had the most perfect knowledge of the Father, had the closest intimacy with him ( John 1:18 ). ( John 13:23 ) was "leaning on Jesus' bosom" at the last supper. Our Lord carries his lambs in his bosom, i.e., has a tender, watchful care over them ( Isaiah 40:11 ).

These dictionary topics are from
M.G. Easton M.A., D.D., Illustrated Bible Dictionary, Third Edition,
published by Thomas Nelson, 1897. Public Domain, copy freely.