John 18:2

And Judas who betrayed him knew the place, for Jesus often retired there with his disciples.

Luke 21:37

And he taught during the days in the temple, and went out and spent the nights on the mountain called the Mount of Olives.

Luke 22:39

AND going out, he went, according to his custom to the Mount of Olives; and the disciples followed him.

Mark 11:11-12

And Jesus went into Jerusalem, and into the temple, and looking round on all things when it was now evening he went out to Bethany with the twelve.

Treasury of Scripture Knowledge

Summary

And Judas also, which betrayed him, knew the place: for Jesus ofttimes resorted thither with his disciples.

General references

Bible References

For

Mark 11:11
And Jesus went into Jerusalem, and into the temple, and looking round on all things when it was now evening he went out to Bethany with the twelve.
Luke 21:37
And he taught during the days in the temple, and went out and spent the nights on the mountain called the Mount of Olives.
Luke 22:39
AND going out, he went, according to his custom to the Mount of Olives; and the disciples followed him.

General references

Mark 14:42
arise, let us go; behold, he that betrays me is at hand!