Jason,
God bless you. Some many people give up on their marriages at the first sign of trouble. May you be blessed and see the reward that comes when you stand in faith believing in an ALMIGHTY God. My husband left briefly too, early in our marriage and I stood with other believers in prayer that the Lord would bring him home..... and HE did!!! in less than three days my husband came home in the middle of the night and said that he couldn't sleep and needed to come home RIGHT NOW!!!. That's the power of prayer. You need to put out a JESUS A.P.B. (ALL POINTS BULLETIN) on your wife and watch the power of God bring her home. Don't forget to pray for your wife's unmet needs and unhealed hurts as she is probably experiencing her own pain that she has not told you about. Also remember that sometimes the Lord allows us to go through adversity in order to bring us closer to HIM. Also ask the Lord what areas in you that need to be changed while He is dealing with your wife. Often times God will change us first before He changes our spouse. Be sure to release your wife in prayer from any unforgiveness that you may have against her for walking out and rejecting you. DON'T GIVE UP!!!. The Word of the Lord says what God has joined together let no man put asunder (Mk 10:9) stay close to the Lord and give Him all of your cares and burdens. You don't have to carry this backpack of heartache. Let go and Let God.
I have a heart for marriages because of what I have seen the Lord do in mine.
In Christ's Love,
Joelle