Soils with high organic matter will transfer water very readily. Often, gravity and surface tension forces are in equilibrium. Gravity will be pulling water downwards against surface tension forces which are pulling the water upwards. This equilibrium condition is the field capacity, and is less than saturation, where all the voids are filled with water. Osmotic pressures are created when different levels of solution are in contact, water being attracted towards the stronger solution.
Good soils have significant pores.
If the soil is moist, water will be continuously evaporating and condensing, so the air inside the pores is saturated with water vapour. If the soil is uniformly moist, there appears to be no movement of the water because the rates of evaporation and condensation are in balance. The whole system is in equilibrium, with no net movement of water. However, if one area such as the root zone is drier than the rest of the soil, then water condensing on either the roots themselves or on soil within the root zone will result in water movement from areas outside the plant to the root zone. Movement of water by evaporation and condensation can be significant with changes in temperature from day to night.