In this video, Elizabeth April discusses dimensions and their significance. They explain that dimensions are different vibrational frequencies and densities. The first dimension is a straight line, the second dimension introduces polarity and consciousness, the third dimension is the physical realm where action takes place, the fourth dimension is time, and the fifth dimension is a higher vibrational state with more freedom and less limitation. Elizabeth April also mentions that there are 12 dimensions in the known universe and that higher dimensions allow for a deeper understanding of the world.