Yes, we have . . . I again say - YOU do not understand. We are fathered by God - He is our FATHER. We are born into HIS family, chosen to be adopted into HIS family. When a person is born - they die - born of perishable seed . . . When a person is born again - born of imperishable seed - DOES NOT PERISH [incorruptible seed - DOES NOT CORRUPT]. We are HOLY by nature; the divine nature which we partake of when we are born again. We are SEALED by God, we have been guaranteed, NOTHING (not our failures or our faults) can separate us from the love of Christ.
For the body is not one member, but many. If the foot shall say, Because I am not the hand, I am not of the body; is it therefore not of the body? And if the ear shall say, Because I am not the eye, I am not of the body; is it therefore not of the body? If the whole body were an eye, where were the hearing? If the whole were hearing, where were the smelling? But now hath God set the members every one of them in the body, as it hath pleased him. And if they were all one member, where were the body? But now are they many members, yet but one body. And the eye cannot say unto the hand, I have no need of thee: nor again the head to the feet, I have no need of you. Nay, much more those members of the body, which seem to be MORE FEEBLE are NECESSARY: And those members of the body which we THINK TO BE LESS HONOURABLE, upon these WE BESTOW MORE ABUNDANT HONOUR and our uncomely parts have more abundant comeliness. For our comely parts have no need: but God hath tempered the body together, having given more abundant honour to that part which lacked. That there should be no division in the body; but that the members should have the same care one for another. And whether one member suffer, all the members suffer with it; or one member be honoured, all the members rejoice with it. [1 Cor. 12:14-26] . . . Are we going to amputate each part of Christ's body that messes up - God seems to think they are EACH important. If we amputate all members but one . . . where would the body be?
The little paragraph you had on "guarantee" . . . If it is not a true guarantee from God - what worth do we have in Him guaranteeing us anything? The thing is - God's kids want to show God that what he did wasn't in vain . . . . we are saved by grace . . . we are saved by faith . . . our trust lies in what Christ did for us and the promises that come with that trust in Christ are ours . . . but I guess if God's gurarantee isn't good enough . . . His promises aren't either.
(last sentence meant facetiously)