To hold a grudge against anyone only keeps us in bondage, and since God forgives us we too must forgive others. By keeping a grudge against another we are only condemning ourselves (James 5:7-9). 7 Be patient therefore, brethren, unto the coming of the Lord. Behold, the husbandman waiteth for the precious fruit of the earth, and hath long patience for it, until he receive the early and latter rain.8 Be ye also patient; stablish your hearts: for the coming of the Lord draweth nigh.9 Grudge not one against another, brethren, lest ye be condemned: behold, the judge standeth before the door.
As Christians we are to give to others; but not grudgingly, for God loves a cheerful giver. When we love one another we show forth the image of the Lord we serve (2 Corinthians 9:6-12). 6 But this I say, He which soweth sparingly shall reap also sparingly; and he which soweth bountifully shall reap also bountifully.7 Every man according as he purposeth in his heart, so let him give; not grudgingly, or of necessity: for God loveth a cheerful giver.8 And God is able to make all grace abound toward you; that ye, always having all sufficiency in all things, may abound to every good work:9 (As it is written, He hath dispersed abroad; he hath given to the poor: his righteousness remaineth for ever.10 Now he that ministereth seed to the sower both minister bread for your food, and multiply your seed sown, and increase the fruits of your righteousness;)11 Being enriched in every thing to all bountifulness, which causeth through us thanksgiving to God.12 For the administration of this service not only supplieth the want of the saints, but is abundant also by many thanksgivings unto God;
1 Peter 4:8-10