“For I have opened my mouth unto the LORD, and I cannot go back”  (Judges 11:35).  

 “We read in Judges 11: 29 that, “Then the Spirit of the LORD came  upon Jephthah.” This shows us that he went into his vow to the living God  with all the leading, inspiration and guidance of God. God was with him  because He knew that Jephthah would not deny Him anything, not even his  own heart and life. The covenant we have individually made with the Lord  is not to serve Him for a given number of days or years but to the end of our  lives.  

“You can remember your resolution and promises unto God both in  the secret of your heart and before many witnesses on the day that God  gave you victory over the enemy, made you pass from death unto life, and  filled your soul with joy. Remember how you opened your mouth unto God. Maybe you are one of those who do not want to make vows at all, but  then God has commanded you that:  

“Honour the LORD with thy substance, and with the firstfruits of thy  increase” (Proverbs 3:9).  

“The Lord is making you to realize that you should honour Him  with all your possessions, all your treasures and riches without any  exception. Out of all that God has given to you, with what have you  honoured Him? Which of them have you taken before God in line with the  examples of Hannah and Abraham? People who honour God with their  substance are those who have made a covenant with God by sacrifice. That  day will dawn when God will gather them together unto Himself.