A blessing is not the same as good luck. “Bless/blessing has been most frequently understood in terms of benefits conveyed—prosperity, power, and especially fertility. This focus on the content of the benefit is now being viewed as secondary. The primary factor of blessing is the statement of relationship between parties. God blesses with a benefit on the basis of the relationship. The blessing makes known the positive relationship between the parties, whether a single individual (Gen 12:1–3) or a group (Deut 7:14–16).”1
28 And God blessed them. And God said to them, “Be fruitful and multiply and fill the earth and subdue it, and have dominion over the fish of the sea and over the birds of the heavens and over every living thing that moves on the earth.”