But when the cattle were feeble, he put them not in: so the feebler were Laban's, and the stronger Jacob's.
-- Gen. 30:42 (KJV)
Jacob's plan worked. He was able to devise a way through visualization that ensured that the speckled and spotted cattle conceived within the three-day span were strong.
Numerical Analysis: The numerical pattern for this verse is 3, 6, 9, 4, 2. (3) Follow the Holy Spirit or remain weak. (6) Expose evil or be left out. (9) Overturn evil so that whoever oppresses you will eventually become weaker than you. (4) Stay in God's Word in order to increase in strength. (2) Walk in God's kingdom in order to increase in strength.