God is too faithful to fail.
God loves you so much and He sent His son Jesus to die on the cross for you and so that you might be saved. He will never fail you believe and trust in Him. when men disappoint you He will never let you down.
The mercy of God is on us.
For thou Lord, art good, and ready to forgive and plenteous in mercy unto all them that call upon thee. PS 86: 5, 13 For great is thy mercy toward me and thou has delivered my soul from the lowest hell.” This is pure grace.