Is King David really the perfect example of OSAS? No, seriously. If he is the perfect example, then why do you suppose he was so fervent in his pleas to ask God to forgive him his sins against God? Wasn't he already saved? If so, why would he fear God's judgement of him for sins? Isn't that the core belief of OSAS?
1 .) Have mercy upon me, O God, according to thy lovingkindness: according unto the multitude of thy tender mercies blot out my transgressions.
2 .) Wash me throughly from mine iniquity, and cleanse me from my sin.
3 .) For I acknowledge my transgressions: and my sin is ever before me.
4 .) Against thee, thee only, have I sinned, and done this evil in thy sight: that thou mightest be justified when thou speakest, and be clear when thou judgest.
5 .) Behold, I was shapen in iniquity; and in sin did my mother conceive me.
6 .) Behold, thou desirest truth in the inward parts: and in the hidden part thou shalt make me to know wisdom.
7 .) Purge me with hyssop, and I shall be clean: wash me, and I shall be whiter than snow.
8 .) Make me to hear joy and gladness; that the bones which thou hast broken may rejoice.
9 .) Hide thy face from my sins, and blot out all mine iniquities.
10 .) Create in me a clean heart, O God; and renew a right spirit within me.
11 .) Cast me not away from thy presence; and take not thy holy spirit from me.
12 .) Restore unto me the joy of thy salvation; and uphold me with thy free spirit.
13 .) Then will I teach transgressors thy ways; and sinners shall be converted unto thee.
14 .) Deliver me from bloodguiltiness, O God, thou God of my salvation: and my tongue shall sing aloud of thy righteousness.
15 .) O Lord, open thou my lips; and my mouth shall shew forth thy praise.
16 .) For thou desirest not sacrifice; else would I give it: thou delightest not in burnt offering.
17 .) The sacrifices of God are a broken spirit: a broken and a contrite heart, O God, thou wilt not despise.
18 .) Do good in thy good pleasure unto Zion: build thou the walls of Jerusalem.
19 .) Then shalt thou be pleased with the sacrifices of righteousness, with burnt offering and whole burnt offering: then shall they offer bullocks upon thine altar.
Gotta say that King David is the perfect example of one who realizes that sin separates us from God, and we MUST confess our sins and ask for His forgiveness........AND.......He will be faithful to do just that!
No way one can read about King David and believe that he represents the ideology of OSAS.