Acts 1:3

English Standard Version

3 He presented himself alive to them after his suffering by many proofs, appearing to them during forty days and speaking about the kingdom of God. (Mt 28:17; Mr 16:14; Lu 24:34; Lu 24:36; Joh 20:19; Joh 20:21; Ac 10:40; Ac 13:31; 1Co 15:5)

New International Version

3 After his suffering, he presented himself to them and gave many convincing proofs that he was alive. He appeared to them over a period of forty days and spoke about the kingdom of God.

New Int. Readers Version

3 After his suffering and death, he appeared to them. In many ways he proved that he was alive. He appeared to them over a period of 40 days. During that time he spoke about God's kingdom.

King James Version

3 To whom also he shewed himself alive after his passion by many infallible proofs, being seen of them forty days, and speaking of the things pertaining to the kingdom of God: