... to the praise of the glory of His grace, by which He made us accepted in the Beloved. (Ephesians 1:6 NKJV)
Now, Christian, I want you this morning, to rejoice in this—you are accepted “in the Beloved.” You look within, and you say, “There is nothing acceptable here!” Man, look at Christ, and see if there is not everything acceptable there! Your frame depresses you, but look to Jesus, and hear Him cry, “It is finished!” Will not that death-note reassure you?
… While you have still to bear groans, and doubts, and fears, to fight with corruption, and to wrestle with temptation, you are still accepted in the Beloved! You are never accepted in yourself—you are but a condemned sinner in yourself; you are never anything but accursed both of God and of the Law out of Jesus! But in Christ you are never accursed; in Christ never condemned; for he who believes in Him is not condemned, and he who believes not is condemned already, because He believes not on the Son of God! “Accepted in the Beloved!” .... How I pity you who cannot say this. How I rejoice with you who can! You have troubles, you say—what are your troubles? You are accepted in the Beloved! You tell me you have to fight with flesh and blood—what of it—as long as you are accepted in the Beloved? But you are so poor, you say, and you have to go home to a miserable meal today—but then, how rich you are—you are accepted in the Beloved! The devil is tempting you—never mind, he cannot destroy you, for you are accepted in the Beloved! Even the glorified souls are no more accepted than we are! They are only accepted in Heaven in the Beloved, but so are we! I have often thought that if the children of God could fall from Grace on earth, they could certainly fall from Glory in Heaven. What is there that keeps them holy in Heaven? Is it their own will? If so, the heavenly saints may become hellish fiends! Brothers and Sisters, it is Christ who keeps them! They are in Christ, therefore they cannot fall—so are we in Christ—therefore shall we never fail nor fall away, but unto the end shall we endure.
More recently, Richard Lovelace wrote the following:
Only a fraction of the present body of professing Christians are solidly appropriating the justifying work of Christ in their lives. . . . In their day-to-day existence they rely on their sanctification for justification. . . . Few know enough to start each day with a thoroughgoing stand upon Luther’s platform: you are accepted, looking outward in faith and claiming the wholly alien righteousness of Christ as the only ground for acceptance, relaxing in that quality of trust which will produce increasing sanctification as faith is active in love and gratitude.
In order for a pure and lasting work of spiritual renewal to take place within the church, multitudes within it must be
led to build their lives on this foundation. This means that they must be conducted into the light of a full conscious awareness of God’s holiness, the depth of their sin and the sufficiency of the atoning work of Christ for their acceptance with God, not just at the outset of their Christian lives but in every succeeding day.
(Richard F. Lovelace, Dynamics of Spiritual Life (Downers Grove, 1979), pages 101-102.)
You were right, you don't measure up to God's holy standard.So stop looking to your own performance to please God. Instead, humble yourself and trust in the One whose obedience is transferrable to the most wretched sinner. The Father will then look at you and say, "This is my beloved son with whom I am well pleased!"