Here is an adapted post from Paul Ellis (for the full, unedited post, go here), a new grace-blogger that I found by recommendation of Joanie Weaver. Thanks, Joanie... and thanks, Paul. This is great stuff!

I may be living under law... 

1. If I'm not 100% sure if I'm 100% forgiven.

God doesn’t do forgiveness in installments. All your sins were forgiven at the cross (Col 2:13) when God the Son abolished sin by the sacrifice of Himself (Heb 9:26). Neither God the Father (Heb 8:12) nor God the Holy Spirit (Heb 10:17) remembers your sin any more. When we confeess, he forgives ALL of our unrighteousness (1 Jn. 1:9).

2.   If I believe Christians have a duty or responsibility to serve the Lord.

Duty and responsibility are synonyms for obligation. This is a mind-set that says we are obliged, or indebted, to God. I’ve heard it said that “Jesus has done so much for you, what will you do for Him?” Indeed, God has given us everything. Ever wondered why? He did it “that in the ages to come He might show the exceeding riches of His grace in His kindness toward us in Christ Jesus” (Eph 2:7). He is not just rich in grace, but exceedingly rich. You cheapen His grace by thinking you have a duty or responsibility to pay Him back. Your responsibility is to believe that He is good and true! It is not our obligation to serve the Lord, it is our royal privilege. It is not our duty, but our great delight.

3.   If suffer from performance anxiety and worry.

Performance anxiety is a rational response to the uncertainty of life under the old covenant. But anxiety has no place in the new. We are to draw water from the wells of salvation with joy (Is 12:3). We walk under law in anxiety and fear, but we walk under grace with joy and thanksgiving! “Happy are those whose wrongs are forgiven, whose sins are pardoned! Happy is the person whose sins the Lord will not keep account of!” (Rms 4:7-8, GNB) God has made us His Sons, and with such a Father we need not be worried about anything (Mt 6:32). He is our Provider who delights to give good gifts to those who ask Him (Mt 7:11). Those who serve under the law are insecure, but sons are secure.