Hebrews 4:9-13 ... There remaineth therefore a rest to
 the people of God. 10 For he that is entered into his rest, he also 
hath ceased from his own works, as God did from his. 11 Let us labour 
therefore to enter into that rest, lest any man fall after the same 
example of unbelief. 12 For the word of God is quick, and powerful, and 
sharper than any twoedged sword, piercing even to the dividing asunder 
of soul and spirit, and of the joints and marrow, and is a discerner of 
the thoughts and intents of the heart. 13 Neither is there any creature 
that is not manifest in his sight: but all things are naked and opened 
unto the eyes of him with whom we have to do.
Proverbs 21:31 ... The horse is prepared against the day of battle: but safety is of the LORD.