I love that Bible verse (
1 John 1:7) about people just needing to walk  in the "light" that they have.  It's a great passage to support the fact  that God does not require more of us than what we have the background  and experience to grasp.  However, even with that verse, I have found  that it's a lot easier to SEE what we need to do than to actually DO it.   Our theory very quickly outstrips our ability to practice it.  So what  do we do when our "light" exceeds our "walk"?
These four words  from The Lord's Prayer ("Thine is the power.") sum up a very important  part of our walk with God, and that is our absolute dependence on his  merciful help in order to keep on walking.
"Thine is the power,"  is just one of three things we are reminded of at the end of The Lord's  Prayer (
Matthew 6:13).  The "kingdom", the "power", and the "glory" all  belong to and come from God.  Praying those three lines seems so unlike  much of what I think of as prayer.  We are not asking for anything, and  it only barely comes into the area of praise.  Instead, it just seems to  be a personal reminder of our total dependence on God even for our  strength to trust him and obey him.
"Power" is a word that fits  neatly between "kingdom" and "glory", since it has a kind of political  sound to it.  But today I've been thinking of the word more in the sense  of "strength", something I find myself falling short of so often.   Somewhere between walking in the Light and recognising that all  strength ultimately comes from God is a merging of our will with his  power to accomplish that will.
Jesus said to his disciples, "The  spirit, indeed, is willing, but the flesh is weak." (
Matthew 26:41)   This is the same Jesus who said, "Be ye perfect, even as your heavenly  Father is perfect." (
Matthew 5:48)  Paul said of himself, "The good that  I would do, I do not.  Oh wretched man that I am!"  (
Romans 7:19, 24)  This was the same Paul who said, "I can do all things through Christ,  who strengthens me." (
Philippians 4:13)  These apparently contradictory  statements are only consistent when we understand that the strength (or  power) comes from Christ in the first place.  
Even that passage  about walking in the light finishes by telling us that our "walk"  results in us being "cleansed from all sin".  So obviously, our walk is  never going to be perfect. (Otherwise, there would be no "sins" for  which we would need to be forgiven.)  There must be a dynamic  interaction between our will and God's will, our strength and God's  strength, always remembering that even what we might call "our strength"  is a gift from God, to whom belongs all the glory, forever and ever.   Amen.