## built an altar to Yahweh ##

"built an altar dedicated to Yahweh" or "built an altar for worshiping Yahweh". He may have built it with stones.

## clean animals … clean birds ##

"Clean" means that God allowed these animals to be used in sacrifice. Some animals were not used for sacrifices and were called "unclean."

## offered burnt offerings ##

This can be translated as "burnt the animals as offerings to Yahweh." Noah killed the animals and then completely burned them up as an offering to God.

## curse the ground ##

"do very serious harm to the earth" (see: UDB)

## because of mankind ##

This can be made more explicit: "because mankind is sinful." (See: [[rc://en/ta/man/translate/figs-explicit]])

## the inclination of their hearts ##

"their tendency" or "their habit"

## the inclination of their hearts is evil from childhood ##

"from their earliest years they tend to do evil things" or "even when they are young, they want to do evil things"

## from childhood ##

This refers to an older child and can be translated as "from their youth."

## pleasing aroma ##

This refers to the smell of the roasted meat.

## While the earth remains ##

"while the earth lasts" or "as long as the earth exists"

## seed time ##

"the season for planting"

## cold and heat, summer and winter ##

These expressions both refer to two major times in the year in terms of weather. Translators may use local expressions for referring to times of the year.

## summer ##

the hot, dry time of the year

## winter ##

the cool, wet time of the year

## will not cease ##

"will not cease to exist" or "will not cease to occur." This can also be translated as "will continue."