euche

1. A vow to keep a promise. (Silva Rhetoricae)

2. Euche, in latine Votum, is a forme of speech by which the Orator or speaker expresseth a solemne promise or vow; either made with condition, or rising from some vehement affection.(Peacham)

3. 514. STATEMENT OF A FUTURE OCCURRENCE (PROMISSIO).
Again, the assertion refers to some future occurrence which is represented as quite certain, and sometimes inevitable. (De Mille)

4. An Expression of Feeling by way of Prayer, Curse, or Imprecation... This figure is a change by which a statement is expressed as a prayer, instead of as a matter of fact. And where the prayer comes in by way of parenthesis caused by the sudden change. (Bullinger, 899)

2. Examples of vowes made with condition. First of Jacob, Ge.28.21. Then Jacob vowed a vow saying: If God wil be with me, and will keep me in this journey which I go, and wil give me bread to eate, and cloth to put on, so that I come againe unto my father in safetie. Then shall the Lord be my God, and this stone which I have set up as a pillar, shall be Gods house, and of all that thou shalt give me, will I give the tenth unto thee. (Peacham)

2. And Jeptah vowed a vow unto the Lord and sayd, I thou shalt deliver the children of Ammon into my hands then that thing that commeth out of my house to meet me when I come home in peace from the children of Ammon, shall be the Lords, and I will offer it for a burnt offring. (Peacham)

3. "Woman, too, is now an author; and I undertake to say that the literature of the next century will be richer than the classic epochs for that cause." -WENDELL PHILLIPS. (De Mille)

4. Ps. 118:25. -"Save now, I beseech thee, O LORD: O LORD, I beseech thee, send now prosperity." (Bullinger, 899)