Longer Catechism (Orthodox) 20.374

Chapter 20 — Part I — Article XI (Of the Resurrection of the Dead)

Section 374. Q. Why do we ascribe to the souls of the righteous a foretaste of bliss before the last judgment? A. On the testimony of Jesus Christ himself, who says in the parable that the righteous Lazarus was immediately after death carried into Abraham's bosom. Luke xvi. 22.