Texas Government Code - GOV'T § 62.007. Envelopes Containing Jury Lists;  Oath

(a) The justice of the peace or the county or district judge receiving an envelope containing a jury list shall inspect the envelope for proper endorsement.

(b) The judge shall return the envelope to the county or district clerk or clerk's deputy on completion of his inspection and may instruct the clerk or deputy to endorse on the envelope that the jury for that week is to be summoned for a day other than Monday of that week.

(c) At the time that the judge returns the envelope to the clerk or deputy, the judge shall administer to the clerk and each of the clerk's deputies an oath that in substance provides:

“You do solemnly swear that you will not open an envelope containing a jury list now delivered to you nor permit an envelope to be opened until the time prescribed by law;  and that you will not communicate to any person the names appearing on a jury list nor directly or indirectly converse or communicate with a person selected as a juror about a case pending for trial in this court at its next term, so help you God.”

(d) Immediately after the judge returns an envelope containing a jury list to the clerk or deputy, the clerk shall file the envelope in a secure place in his office.