When was Jesus born? (Why do we not have specific dates?) Galatians 4:4

Who may take communion?

Is there a Biblical reference for kneeling during prayer? Psalm 95:6 Isiah 6 Romans 14:13 Mathew 2:2 Mark 1 Luke 7:45 Zephaniah 3:17

Is there some kind of follow-up with those that get baptized?