Prepare by seeking light, not darkness
Isa 8:19 And when they shall say unto you, Seek unto them that have familiar spirits, and unto wizards that peep, and that mutter: should not a people seek unto their God? for the living to the dead?
Being concerned about the coming invasion, why seek the occult? Why seek the darkness and the dead for the help of the living? Is not God the God of your help? Is he not the God of the living?
Mark 12:26 And as touching the dead, that they rise: have ye not read in the book of Moses, how in the bush God spake unto him, saying, I am the God of Abraham, and the God of Isaac, and the God of Jacob?
Mark 12:27 He is not the God of the dead, but the God of the living: ye therefore do greatly err.
Psa 124:8 Our help is in the name of the LORD, who made heaven and earth.
Isa 8:20 To the law and to the testimony: if they speak not according to this word, it is because there is no light in them.
You have the law and the testimony, the word of God and the stories in the Bible. If you have any truth or light in you, rely on these.
Isa 8:21 And they shall pass through it, hardly bestead and hungry: and it shall come to pass, that when they shall be hungry, they shall fret themselves, and curse their king and their God, and look upward.
They walk past the word of life, with no hunger for it. When the need comes and they become hungry for help and wisdom, they worry and are upset, crying and complaining, because they did not hunger for God's truth. They curse the president and those in authority and they blame God for their problems.
Isa 8:22 And they shall look unto the earth; and behold trouble and darkness, dimness of anguish; and they shall be driven to darkness.
They see the troubles on the earth and rather than seeking God, they are driven to darkness. Dark despair, depression, false religion, and evil thoughts.
Luke 21:26 Men's hearts failing them for fear, and for looking after those things which are coming on the earth: for the powers of heaven shall be shaken.