Genesis 3:24 (c) The direction of the sunrise is probably to keep ever before the people the fact that CHRIST will arise as the Son of Righteousness with healing in His wings. The gate to the tabernacle was on the east side and so was the door to the tabernacle. Evidently this is typical of the truth concerning the return of our Lord.
Psalm 103:12 (b) Since there is no measurement between these distances, this is typical of the complete removal of the sins of the believer.