Have you recognized the deadly error of salvation by self-reliance, and embraced the Gospel of salvation by the sovereign grace of God?
Are you a part of the Lord's remnant, remaining faithful to Him, and being preserved by His power and grace?
How does Paul deal with this puzzling question, "I say then, God has not rejected His people, has He?"
Has the Spirit of God, working in your heart through the Word of God, brought you to a living faith in Jesus Christ?
Have you recognized the greatness of the Gospel message, called upon the name of the Lord Jesus Christ, and trusted in Him alone for your salvation?
Do you stand before God clothed in the perfect righteousness of Jesus Christ and fully accepted in Him?