There are two aspects to the life of each person. We might call them "heart" and "mind," a part of us that wants and feels and a part of us that thinks and knows. The Writings usually refer to these as the "will" and the "understanding." They are reflections, and receptacles, of the Lord's infinite love and infinite wisdom. Of the two, the heart or will is ultimately the most important. Who we actually are is determined by what we love, and the things in our heart ultimately determine our place in heaven (or hell). But the will is beyond our control; we can't force ourselves to want something good or to not want something bad; we can control our actions, but not our feelings. Because of this power, the Lord works subtly and carefully in our hearts, in ways we can't sense. Most of the work and interaction goes on in our minds through the working of what the Writings call "Divine Truth," which is essentially the Lord's entire essence expressed in a form that is compatible with our minds. When the Bible talks about the Lord's "spirit," it represents this operation of Divine Truth in our minds, the way he reaches out and embraces us, and invites us to embrace him back. And when the Bible talks about people having "spirit," it is talking about our minds when we embrace Divine Truth.

34. Love and faith cannot possibly be separated for they constitute one and the same thing. This is why, when first the [great] lights are dealt with and they are taken to be one, it is said [using a singular verb with a plural noun], 'Let there be lights in the expanse of the heavens'. Let some marvels relating to this be mentioned here. Since celestial angels possess from the Lord that kind of love, they possess by virtue of that love every cognition of faith, and by virtue of that love the kind of life and light of understanding that almost defies description altogether. On the other hand spirits who without love have a knowledge of the doctrinal matters concerning faith live such cold lives and are in such dull light that they cannot approach even the outer gateway to heaven before running off in the opposite direction. Some claim to have believed in the Lord, but they have not lived according to His teaching. The Lord refers to these people in Matthew as follows,

Not everyone who says to me, Lord, Lord, will enter the kingdom of heaven, but he who does My will. Many will say to me on that day, Lord, Lord, did we not prophesy in your name? and so on. Matthew 7:21-22-end.

[2] From this is clear that those who have love have faith as well, and so heavenly life, whereas those who claim to have faith and yet have none of the life inherent in love do not. The life of faith devoid of love is like sunlight devoid of warmth, as is the case in wintertime when nothing grows and every single thing is inactive and dies off. But faith deriving from love is like the sunlight in springtime when everything grows and blossoms, for it is the warmth of the sun that brings it out. It is similar with spiritual and celestial things, which are normally represented in the Word by the things found in the world and on earth. An absence of faith, and faith devoid of love, are also compared by the Lord to winter where He foretold the close of the age in Mark,

Pray that your flight may not happen in winter, for those will be days of affliction. Mark 13:18-19.

'Flight' means the final period, also the time when a person dies; 'winter' is life which is destitute of love, 'days of affliction' his wretched condition in the next life.