Thou shalt not avenge, nor bear any grudge against the children of thy people, but thou shalt love thy neighbour as thyself: I am the Lord. Leviticus 19:18.

Hatred stirreth up strifes: But love covereth all sins.  Proverbs 10:12.

He that covereth a transgression seeketh love; But he that repeateth a matter separateth very friends. Proverbs 17:9.

A new commandment I give unto you, That ye love one another; as I have loved you, that ye also love one another. 35 By this shall all men know that ye are my disciples, if ye have love one to another. John 13:34-35

This is my commandment, That ye love one another, as I have loved you. John 15:12.

Let love be without dissimulation (genuine not fake). Abhor that which is evil; cleave to that which is good. 10 Be kindly affectioned one to another with brotherly love; in honour preferring one another;  Romans 12:9-10

Love worketh no ill to his neighbour: therefore love is the fulfilling of the law. Romans 13:10

But as touching brotherly love ye need not that I write unto you: for ye yourselves are taught of God to love one another. 1 Thessalonians 4:9

For, brethren, ye have been called unto liberty; only use not liberty for an occasion to the flesh, but by love serve one another. 14 For all the law is fulfilled in one word, even in this; Thou shalt love thy neighbour as thyself. 15 But if ye bite and devour one another, take heed that ye be not consumed one of another. Galatians 5:13–15.

And walk in love, as Christ also hath loved us, and hath given himself for us an offering and a sacrifice to God for a sweetsmelling savour.  Ephesians 5:2.

And the Lord make you to increase and abound in love one toward another, and toward all men, even as we do toward you:  1 Thessalonians 3:12.

Let brotherly love continue. Hebrews 13:1

Seeing ye have purified your souls in obeying the truth through the Spirit unto unfeigned love of the brethren, see that ye love one another with a pure heart fervently: 1 Peter 1:22.

And above all things have fervent charity among yourselves: for charity shall cover the multitude of sins. 1 Peter 4:8

For this is the message that ye heard from the beginning, that we should love one another.  1 John 3:11.

My little children, let us not love in word, neither in tongue; but in deed and in truth.  1 John 3:18.

Beloved, let us love one another: for love is of God; and every one that loveth is born of God, and knoweth God. 8 He that loveth not knoweth not God; for God is love. 11 Beloved, if God so loved us, we ought also to love one another. 12 No man hath seen God at any time. If we love one another, God dwelleth in us, and his love is perfected in us. I John 4:7-12

And we have known and believed the love that God hath to us. God is love; and he that dwelleth in love dwelleth in God, and God in him.  I John 4:16

If a man say, I love God, and hateth his brother, he is a liar: for he that loveth not his brother whom he hath seen, how can he love God whom he hath not seen? 21 And this commandment have we from him, That he who loveth God love his brother also I John 4:20-21

Other interesting quotes and articles about love

Love infected with Disappointment

Commanded to love

A More Excellent Way

A More Excellent Way, Love 

A More Excellent Way, Love 2

Bible Teaching on Loving One Another