The following are Bible passages regarding God's grace:

IS DESCRIBED AS.
Rich.  Ephes. 1:7; Ephes. 2:7
Exceeding.  2 Cor. 9:14
All-sufficient.  2 Cor. 12:9
All-abundant.  Romans 5:15, 17, 20

IS THE SOURCE OF.
Election.  Romans 11:5
The call of God.  Galatians 1:15
Justification.  Romans 3:24; Titus 3:7
Faith.  Acts 18:27
Forgiveness of sins.  Ephes. 1:7
Salvation.  Acts 15:11; Ephes. 2:5, 8
Consolation.  2 Thes. 2:16
Hope.  2 Thes. 2:16
The gospel, a declaration of.  Acts 20:24, 32
Necessary to the service of God.  Hebrews 12:28
The success and completion of the work of God to be attributed to.  Zech. 4:7
Justification by, opposed to that by works.  Romans 4:4-5; Romans 11:6; Galatians 5:4
Should be established in.  Hebrews 13:9
Should be strong in.  2 Tim. 2:1
Not to be received in vain.  2 Cor. 6:1
Special manifestation of, at the second coming of Christ.  1 Peter 1:13
Not to be abused.  Romans 3:8; Romans 6:1, 15
Glory of, exhibited in our acceptance in Christ.  Ephes. 1:6

Summary
It is obvious by all of the above topics on grace, that grace is never seen as a means to justify, excuse, or to cover up sin. Christians who are walking in willful sin and excusing or justifying it by saying 'we are saved by grace', obviously do not understand the biblical concept of grace.

As can be seen by the studies we have done on the subject of grace, grace is actually the power of God to give us the ability to NOT SIN. Thus we can never have too much of God's grace.

It is because of God's grace that we can be born again, that we can be assured of eternity in heaven, and that we are able to walk in victory. Praise God for His grace!!!!