Do this and you will be an ...

Do this and you will be an apostle, a fulfiller of what the Lord chose you for, an accomplisher of your calling as messenger. When at first you succeed in all this, then perhaps the Lord will appoint you as a special ambassador-to save others after you have saved yourself; and to help those who are tempted, after you yourself pass through all temptations, and through all experiences in good and evil.
 Theophan the Recluse

Quotes from the same author

If you examine your life well, you will find many instances when God showed His unmistakable mercy to you. Trouble was brewing, but it passed you by for some reason. God delivered you. Acknowledge these and thank God, Who loves you.
 Theophan the Recluse
If you want to attain salvation, learn and keep in your heart all that the holy Church teaches and, receiving heavenly power from the mysteries of the Church, walk the path of Christ's commandments, under the direction of lawful pastors, and you will undoubtedly attain the Heavenly Kingdom and be saved. All of this is naturally necessary in the matter of salvation, necessary in it entirety and for all. Whoever rejects or neglects any part of it has no salvation.
 Theophan the Recluse
Love covers a multitude of sins," (I Pet. 4:8). That is, for love towards one's neighbor, God forgives the sins of the one who loves.
 Theophan the Recluse