Blessings Promised by Faith - Habakkuk 2:4, Romans 1:17, Galatians 3:11, Hebrews 10:38

The just shall live by faith.

To be "just" (as in justice), one must have a law, understand it, and live it. This world is governed by the telestial law as the default standard. The telestial law is only concerned with the basest standards of conduct (also known as survival of the fittest) and is of little interest to those seeking faith.
The terrestrial law is represented by the laws of Moses, and those laws have promises attached, though not always explicitly stated. (there is a promise specified for honoring parents.) Most respectable people keep the terrestrial law. The higher celestial law was in part given by the Savior in the sermon on the mount. We further received a restoration of the knowledge of celestial laws and covenants through modern-day prophets like Joseph Smith, such as the law of consecration and the temple covenants.

What does this have to do with faith? Faith deals in part with believing Christ will meet His end of the contract; That He will fulfill His part in providing the promised blessings due to the obedient. A just person keeps the law. A person of faith also anticipates the promised blessings. Often times we keep commandments with no expectation of reward. This is like paying for groceries without expecting to eat them. I'm not suggesting that we do what He asks looking for gain; our only motive should be love of the Lord - but do we expect the realization of promised blessings from our obedience?

Do we expect the windows of heaven to open then we pay our tithing and offerings? Do we expect to see the face of God for being pure in heart? Do we realize that we are authorized to the ministering of angels as part of exercising the keys of the priesthood?

Somehow these promises seem distant. But is it not faithless to not expect the Lord to fulfill his end of the contract? Some blessings require a higher level of obedience. For example, if the Lord appeared to me, I would have to live in perfect obedience, or near-perfect obedience from that point forward or risk losing my soul. No, in fact it is proper for us to be completely obedient before certain blessings occur so that we don't damn ourselves. Faith is a principle of power insomuch as the exerciser of faith relies on the Lord to fulfill His promises - promises obtained directly from Him by covenant.