1
to swear to God;to call on heaven as a witness;to cross one's heart
See also:
神に誓って (かみにちかって)
1
to swear;to vow;to take an oath;to pledge
君は聖書に手をのせて誓うべきだ。
You should swear on the Bible.
Other forms
盟う 【ちかう】