Lift up your eyes on high and see: who created these? He who brings out their host by number, calling them all by name, by the greatness of his might, and because he is strong in power not one is missing. — The Bible, (ESV) Isaiah 40:26
The universe itself is one such example of a three-in-one composition. The universe (“uni” meaning one) is made up of three components: time, space, and matter (energy and matter being synonymous as exemplified by E=mc2).
Furthermore, each of these three components (time, space, and matter) breaks down into threes themselves:
1) past, present, and future for the continuum of time,
2) x, y, and z coordinates for three-dimensional entities of space, and
3) positive, negative, and neutral forces for matter and energy.
The Bible records in Hebrews that, “In the beginning “time”, God created the heavens “space“ and the earth “matter“. So the universe itself is a three in one of sorts, thereby reflecting clearly a maker. The logical, orderly way the universe behaves is also a reflection of the One who made and sustains it by the word of His power.
We live in time: Time has three elements, the past, the present and the future. The past is not the present, the present is not the future, and the future is not the past. One is not the other, all are part of the same, none can exist without the other, and yet each is distinct!
Space: We live in a three-dimensional world: height, width, and depth. Height is not width, width is not depth, and depth is not height. One is not the other, all are part of the same, none can exist without the other, and yet each is distinct!
Matter: All Matter is made up of atoms. All atoms consist of three basic components, protons, neutrons, and electrons. A proton is not a neutron, a neutron is not an electron, and an electron is not a proton. One is not the other, all are part of the same, none can exist without the other (and still remain a complete atom), and yet each is distinct!
Another example is our brain: The Mind, the Will, and the Emotion. The Mind is not the Will, the Will is not Emotion, and Emotion is not the Mind (Intellect). One is not the other, all are part of the same, none could exist without the other, and yet each one is distinct.
There are innumerable samples of these principles, in which One is not the other, all are part of the same, none can exist without the other, and yet each is distinct!
The three-dimensional principle can also be seen in the three fold cord. A rope of two strands is twice as strong, but a rope of three strands can be more than ten times as strong! This is because the harder you pull the rope, the tighter the three strands pull together–so the more tension, the stronger the rope. But as in life, you can break a three-strand rope as easily as a single-strand one if you separate the strands, pull each strand separately, or preferably pull in different directions.
To love wisdom is to live according to its dictates, a life of simplicity, independence, magnanimity, and trust. — Henry David Thoreau