In the OT the RV uses this word only in Jer 15:15, where it is the translation of a phrase usually rendered 'slow to anger' (cf. Ex 34:6; Nu 14:18; Ps 86:15, in which passages AV has 'longsuffering').
In the NT 'longsuffering' is the usual tr of makrothumia and the corresponding verb. (The only exceptions are 'patience,' Heb 6:12; Jas 5:10; cf. vh. in Mt 18:25,29; Jas 5:7 f.; and adv. in Ac 26:3). The RV improves on AV by using 'longsuffering' in Lu 18:7; 1Th 5:14. The Gr. word means 'a long holding out of the mind before it gives room to action or passion
And the LORD passed by before him, and proclaimed, The LORD, The LORD God, merciful and gracious, longsuffering, and abundant in goodness and truth,
The LORD is longsuffering, and of great mercy, forgiving iniquity and transgression, and by no means clearing the guilty, visiting the iniquity of the fathers upon the children unto the third and fourth generation.
But you, O Lord, are a God full of compassion, and gracious, longsuffering, and abundant in mercy and truth.
O LORD, you know: remember me, and visit me, and avenge me of my persecutors; take me not away in your longsuffering: know that for your sake I have suffered rebuke.
But since he had nothing to pay, his lord commanded him to be sold, and his wife, and children, and all that he had, and payment to be made.
And his fellow servant fell down at his feet, and besought him, saying, Have patience with me, and I will pay you all.
And shall not God avenge his own elect, who cry day and night unto him, though he bears long with them?
Especially because I know you to be expert in all customs and questions which are among the Jews: therefore I beseech you to hear me patiently.
Or despise you the riches of his goodness and forbearance and longsuffering; not knowing that the goodness of God leads you to repentance?
What if God, willing to show his wrath, and to make his power known, endured with much longsuffering the vessels of wrath fitted to destruction:
Love suffers long, and is kind; love envies not; love vaunts not itself, is not puffed up,
In stripes, in imprisonments, in tumults, in labors, in watchings, in fastings;
But the fruit of the Spirit is love, joy, peace, longsuffering, gentleness, goodness, faith,
With all lowliness and meekness, with longsuffering, forbearing one another in love;
Strengthened with all might, according to his glorious power, unto all patience and longsuffering with joyfulness;
Put on therefore, as the elect of God, holy and beloved, compassion, kindness, humbleness of mind, meekness, longsuffering;
But for this cause I obtained mercy, that in me first Jesus Christ might show forth all longsuffering, for an example to them who should hereafter believe on him to life everlasting.
A man that is divisive after the first and second admonition reject;
That you be not slothful, but followers of them who through faith and patience inherit the promises.
Be patient therefore, brethren, unto the coming of the Lord. Behold, the farmer waits for the precious fruit of the earth, and has long patience for it, until he receives the early and latter rain.
Take, my brethren, the prophets, who have spoken in the name of the Lord, for an example of suffering affliction, and of patience.
The Lord is not slack concerning his promise, as some men count slackness; but is longsuffering toward us, not willing that any should perish, but that all should come to repentance.