Salvation/Justification/BeingBornAgain/Becoming a child of God eternally/being loved forever is as simple as believing a message to be true which, in this case, is to trust in Jesus Christ, who IS God, alone as your personal Lord and Savior:
believing that He died on the cross for your sins by shedding His redemptive blood (without the shedding of the life blood of the only acceptable Lamb Jesus Christ Himself who is without spot, blemish, and without sin, there is no remission of sins, and the very life of the flesh is in the blood, without blood pumping through the body the body is a dead corpse)
and that He was buried, and on the third day rose from the dead for our justification
this is how we are saved, this is what saved us, and this is the evidence that we are saved, and it is the assurance we have personally that we are saved and have everything secured for us by and in Jesus Christ who accomplished our redemption by His blood on the cross when He died for us.