And Jesus answering saith unto them, “Have faith in God.  For verily I say unto you, That whosoever shall say unto this mountain, Be thou removed, and be thou cast into the sea; and shall not doubt in his heart, but shall believe that those things which he saith shall come to pass; he shall have whatsoever he saith.  Therefore I say unto you, What things soever ye desire, when ye pray, believe that ye receive them, and ye shall have them.  And when ye stand praying, forgive, if ye have ought against any: that your Father also which is in heaven may forgive you your trespasses.  But if ye do not forgive, neither will your Father which is in heaven forgive your trespasses.”
Mark 11:22-26

It is a horrid thing for one to harbor a grudge against someone, especially if you profess to have a personal relationship with Jesus Christ.  We might for a while feel angry, but soon there will be a realization of having received forgiveness from the One who forgives our sins, and paid our sin debt.

Telling a mountain to move into the sea would be a remarkable thing.  It would, in fact be a miracle of God.  Asking God for the things we desire, and receiving them, are things that are from God’s desires (Psalm 37:3-4).

If we are asking for God to do these things, then we need to be sure there  is no lack of forgiveness, toward anyone.   Any lack of forgiveness toward others is a  mockery of our heavenly Father, and we have a greater sin that needs God’s forgiveness.

Dear Lord Jesus, if there is any one with whom I have a grudge  and unforgiveness then reveal this to my heart and mind.  That I might have genuine faith in You.  Amen.