Don't Toil on but Think about God
The Gospels were written about 2000 years ago, but they are not obsolete today.
People, including Christ Jesus, did not use smartphones and other modern electronic appliances. They did not eat meals today we eat. They did not travel in jet planes. They did not enjoy sport and entertainment programs on TV. But every episode written in the Gospels can be fully understood by people of today.
However, today people with knowledge of modern science do not simply believe existence or work of ill spirits or angels. People living in 2000 years ago apparently believed in what today's people regard as superstitions. They included absurd ideas about the nature, but some of superstitions must have been really related to the spiritual world some people of today also believe.
The big difference between modern people and those who lived 2000 years ago must be the amount of time they think about God.
As we are today surrounded by many material products, we are busy handling them. As we are today offered many occasions of enjoying entertainments, we are busy enjoying them. As we can today travel so easily to far and various places, we are busy travelling and observing something foreign. Consequently, we have less time for thinking about God.
Christ Jesus and His disciples walking wilderness or fields must have a plenty of time for thinking about God. Probably they think about god for several hours per day. But very few people today think about God for several hours per day.
Therefore to understand the Bible, we have to abandon modern material living to secure time for thinking about God. Maybe if we come to think about God for as long hours as people did 2000 years ago, we would be able to correctly read the Bible.
In this context, hard working people must be very careful not to be led to a state where they have no time for thinking about God. Satan must be able to control busy men easily.
So, not for men to get off guard against Satan, Christ Jesus said not to worry themselves and toil on.
Indeed, when a man is thinking about God, he must be protected from Satan.
Joh 4:7 There cometh a woman of Samaria to draw water: Jesus saith unto her, Give me to drink.
Joh 4:8 (For his disciples were gone away unto the city to buy meat.)
Joh 4:9 Then saith the woman of Samaria unto him, How is it that thou, being a Jew, askest drink of me, which am a woman of Samaria? for the Jews have no dealings with the Samaritans.