To pledge or betroth.
宣誓效忠或订婚

to betroth a daughter
把女儿许配给

To promise or bind by a solemn pledge, especially to betroth.
以誓约约束, 允诺通过庄严的誓言来保证或约束, 特别是订婚

I will betroth you in faithfulness, and you will acknowledge the LORD.
也以诚实聘你归我，你就必认识我耶和华。

The farmer cannot bear to betroth the daughter to allotment a wild beast.
农民不能忍受把女儿嫁给一个畜生。

Seeing Betroth Custom of Tang Dynasty From The Standard Procedures of Marriage Contract Found in Dunhuang Manuscript
从敦煌的婚书程式看唐代许婚制度

She seriously doubts that his husband knows that the beam thinks into the stuff that wants to betroth according to Tong with square.
她严重怀疑他老公是知道梁思成跟方依彤要订婚的事的。