NET
12 Now it was during this time that Jesus went out to the mountain to pray, and he spent all night in prayer to God.
Darby
12 And it came to pass in those days that he went out into the mountain to pray, and he spent the night in prayer to God.
KJV
12 And it came to pass in those days, that he went out into a mountain to pray, and continued all night in prayer to God.